India, who had bagged six golds in the inaugural edition in New Delhi last year, doubled their gold count this year.
Mary Kom overcame some stiff resistance to beat Nikhat Zareen in a split decision to enter the women's 51kg category final.
Mary Kom made a successful return to 51 kg category by overwhelming her opponent Mala Rai of Nepal.
The London Olympic bronze medallist Mary Kom pulled out of Asian Championships last month in order to prepare for the World Championships.
The six-time World Champion Mary Kom has decided to skip the event in order to focus on the World Championships to be held later in the year.
Mary Kom is the only woman to clinch six world championship titles.
Mary Kom achieved the feat two months after becoming the first female boxer to win six world championships.
Amit Panghal (49kg) also won a silver at the Commonwealth Games.
With a gold, a silver and two bronze medals, the Indian contingent recorded one of its best performances at the Women's World Championships.
Mary Kom matched Cuba's Felix Savon as the joint most successful boxer -- men and women -- in the World Championships history.
Mary Kom eclipsed her joint haul of five golds with Katie Taylor of Ireland.
With this gold, Mary Kom also matched Cuba's Felix Savon as the joint most successful boxer - men and women - in the World Championships history.
AIBA World Boxing Championships 2018 Highlights: Mary Kom clinched a record sixth gold medal, while Sonia settled for a silver medal.
Sonia beat Jo Son Hwa of North Korea to enter the final of the featherweight 57kg class.
Mary Kom entered the final of the AIBA Women's World Championships while Lovlina Borgohain took home the bronze.
Mary Kom is aiming for her record sixth gold medal at the AIBA Women's World Championships.
Mary Kom is now assured of at least a bronze medal in the AIBA Women's World Boxing Championships 2018.